Flight number record
DL 1337
Delta Air Lines · Raleigh to Orlando
- Route
- RDU → MCO
- Departs
- 07:05
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1337, check with Delta Air Lines.
DL 1337 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 365 flights, with a median arrival 10 minutes early.
Set against the rest of the country, DL 1337's record is 15 points better than the US average of 77.3%. That gap is worth roughly 147 fewer late arrivals for every thousand flights.
Key figures
On time
92.0%
Arrivals under 15 minutes late, of 352 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
3.56%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When DL 1337 flies
DL 1337 flies RDU to MCO without a single fixed slot. Its most common scheduled departure was 07:05, used on 130 of 365 flights, with 06:10 (110 flights) and 06:00 (73 flights) next.
- Departs 07:05130 flights35.6%
- Departs 06:10110 flights30.1%
- Departs 06:0073 flights20.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1337 runs 3 points better at 92.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1337 next to RDU to MCO
Every carrier on RDU to MCO combined arrived on time 78.0% of the time across 2,695 flights, so DL 1337 is 14 points ahead of it. Delta flew 1,025 flights on the same city pair under all its flight numbers, including this one, and those ran 82.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1337 | 365 | 92.0% | 74 min | 3.56% | A− |
| All Delta Air Lines on RDU–MCO | 1,025 | 82.4% | 75 min | 2.24% | B |
| All carriers on RDU–MCO | 2,695 | 78.0% | 80 min | 1.78% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1337 quarter by quarter
DL 1337 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 83.3%, a swing of 13 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202592 flights94.4%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202691 flights96.6%
- Jul–Sep 202662 flights91.7%
Scale runs 75% to 100%.
By weekday, DL 1337 did best on Saturday at 98.0% on time and worst on Monday at 81.6%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1337 runs when it is late
DL 1337 often beats the schedule: 117 of 352 completed flights, 33%, arrived 15 minutes or more early. The 28 late arrivals split 8 under half an hour, 9 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early117 flights33.2%
- Within 15 min207 flights58.8%
- 15–29 min late8 flights2.3%
- 30–59 min late9 flights2.6%
- 1–2 hours late6 flights1.7%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 352 completed flights by arrival against schedule.
A late pushback is often recovered here: of 32 departures that left 15 minutes late or more, 11 still arrived on time. Only 7 left on time and still arrived late.
The worst days
Worst days for DL 1337
The latest arrival of the period was on 22 July 2026, 4 hours 45 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 July 2026 | 4 hours 45 minutes | Carrier |
| 16 February 2026 | 3 hours 51 minutes | Carrier |
| 29 April 2026 | 3 hours 35 minutes | Carrier |
| 28 January 2026 | 3 hours 12 minutes | Carrier |
| 21 December 2025 | 2 hours 19 minutes | Carrier |
Delay causes
Why DL 1337 runs late
Carrier accounts for 88% of the 2,074 delay minutes carriers reported here, and the remaining four split what is left.
- 88%Carrier
- 12%National Airspace System
The largest share of delay minutes, 88%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,819 of the 2,074 delay minutes reported here. The split is drawn from 2,074 delay minutes reported on DL 1337.
Cancellations run at 3.56%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.1% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 534 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
DL 1337 is not only a RDU to MCO flight. It also flew MCO to RDU (365 flights, 86.8% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 365 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MCO to RDU | 365 | 86.8% | 92 min | 2.47% | A |
What to do with this
Booking DL 1337
For a booking, the cancellation rate is the figure to plan around on DL 1337: 3.56% of its 365 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- RDU to MCO, every carrier and departure
- MCO to RDU, the return direction
- Delta Air Lines 1319 on the same route69.8%
- Raleigh-Durham International (RDU) delay statistics
- Orlando International (MCO) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- What a cancellation rate actually tells you (and what it hides)
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.